Novel perishable garbage biological drying drainage system

Abstract

The utility model provides a novel perishable garbage bio-drying drainage system, which is characterized in that a fermentation bin body is arranged in a tower-type treatment device, the fermentation bin body comprises a feed port, a stirring unit and a drainage unit from top to bottom, support beams are arranged in the fermentation bin body in a layered manner, support parts capable of supporting materials are arranged on the support beams, and the feed port is communicated with the stirring unit and the drainage unit. The stirring unit is divided into stirring discharging areas which are communicated with each other up and down through a supporting beam, each layer of stirring discharging area is provided with a discharging opening in the tower-type treatment device, and feeding equipment communicated with a feeding opening in the top of the tower-type treatment device is arranged outside the discharging opening. According to the tower-type treatment device, materials in the bin body of the tower-type treatment device are fully mixed and the aeration fermentation effect is enhanced through layered material supporting of the supporting beams, layered stirring discharging and top mixed feeding circulation, more water escapes along with aeration and is sucked to the gas dehumidification unit, and downward collection of the water is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of biological drying treatment of perishable garbage, and particularly relates to a novel biological drying drainage system for perishable garbage. Background Art

[0002] With the rapid advancement of garbage classification work, the collection and transportation volume of perishable garbage has increased significantly, and the problem of insufficient treatment capacity for perishable garbage at the end has become increasingly prominent, which has become a difficulty and pain point restricting the popularization of garbage classification. Biological drying is a new aerobic microbial treatment technology for organic solid waste. It can quickly remove moisture through biological fermentation heat, has little demand for supplementary external heat energy, and has a very prominent reduction effect. It is an effective way to solve the problem of perishable garbage disposal and rationally allocate existing facility resources in the eastern coastal areas of China mainly based on incineration.

[0003] At present, the biological drying processes for perishable garbage are mainly drum-type and tower-type treatment processes. Generally, large stirring devices are arranged in the middle, and sufficient mixing is achieved through frequent stirring, supplemented by forced ventilation for oxygen supply. Compared with the traditional windrow treatment process, the efficiency is higher. Due to the cost and difficulty limitations of the drum structure manufacturing, the treatment scale of the drum-type process is relatively limited. The main body of the tower-type treatment process can adopt a reinforced concrete structure, with lower construction costs and adjustable scale dimensions, stronger adaptability, and can meet the treatment requirements of a huge amount of perishable garbage at the present stage. During the fermentation process of the current biological drying materials, part of the moisture overflows along with ventilation and aeration, and the other part seeps to the bottom of the treatment system. Since the materials in the tower-type treatment process are stacked vertically, the moisture content of the materials in the system increases from top to bottom, and the bottom materials are squeezed and compacted. The drainage holes simply arranged in the prior art are extremely easy to block, which will in turn affect the efficiency of biological drying. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a drainage system that can improve the drainage efficiency and fermentation and drying speed during the biological drying process.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] A new biological drying and drainage system for perishable garbage. A fermentation chamber body is arranged inside a tower-type treatment device. The fermentation chamber body includes a feeding port, a stirring unit, and a drainage unit from top to bottom. Support beams are arranged in layers in the fermentation chamber body, and support parts for supporting materials are arranged on the support beams. The stirring unit divides it into upper and lower interconnected stirring and discharging areas through the support beams. Discharging ports are arranged on the tower-type treatment device for each layer of the stirring and discharging areas, and feeding equipment connected to the feeding port at the top of the tower-type treatment device is arranged outside the discharging ports. A water treatment unit is arranged at the bottom of the tower-type treatment device to form an overall collection state for the moisture in the top and bottom areas inside the tower-type treatment device. The drainage unit includes a capillary drainage belt and a bottom drainage body respectively arranged inside and at the bottom of the fermentation chamber body. A water diversion channel for the water body to pass through is arranged between the capillary drainage belt and the bottom drainage body. The drainage end of the bottom drainage body is connected to the water treatment unit, and a gas collection and dehumidification unit connected to the water treatment unit is arranged at the top of the fermentation chamber body.

[0007] Further: The capillary drainage belt surrounds the inner wall of the fermentation chamber body in the bottom-layer stirring and discharging area. The capillary drainage belt includes a number of blocking belts, and grooves for only the water body to drain are formed between adjacent blocking belts.

[0008] Further: A collecting water pipe is arranged below the ground at the bottom layer of the tower-type treatment device, and the collecting water pipe is communicated with the groove.

[0009] Further: A permeable water pipe is arranged inside the bottom drainage body. A water permeable part is arranged on the pipe body of the permeable water pipe. A first pipe orifice end connected to the collecting water pipe is arranged at the top end of the permeable water pipe, and a second pipe orifice end is arranged at the bottom end of the permeable water pipe, and the second pipe orifice end faces the drainage end of the bottom drainage body.

[0010] Further: A filter layer is lined inside the permeable water pipe.

[0011] Further: An inclined pipe section is arranged on the permeable water pipe.

[0012] Further: A grille mesh is arranged at the top of the bottom drainage body, and the mesh holes of the grille mesh are smaller than the particle size of the fermentation materials.

[0013] Further: Fine-grained fillers, medium-coarse-grained fillers, and pebble fillers are sequentially arranged below the grille mesh of the bottom drainage body. The filler diameter of the fine-grained fillers is smaller than the filler diameter of the medium-coarse-grained fillers, and the filler diameter of the medium-coarse-grained fillers is smaller than the filler diameter of the pebble fillers.

[0014] Further: The gas collection and dehumidification unit includes a gas collection pipeline and a gas dehumidification device. The gas collection pipeline is arranged at the top of the fermentation chamber body, and the gas dehumidification device is arranged at the top of the tower-type treatment device. The gas dehumidification device is communicated with the gas collection pipeline through a pipe section.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the utility model, the materials are supported in layers by the support beams, stirred and discharged in layers, and circularly fed and mixed at the top, so as to fully mix the materials in the bin of the tower-type treatment device, strengthen the aeration fermentation effect, and enable more moisture to be dissipated with the aeration and pumped to the gas dehumidification unit, reducing the downward accumulation of moisture. At the same time, through the percolation of the bottom drainage body and the capillary siphon action of the capillary drainage belt and the flexible water-permeable pipe, the efficient bottom drainage is strengthened, solving the problems that the simple drainage holes in the prior art are extremely easy to be blocked and the fermentation is of low quality and efficiency. It can be used for the biological drying treatment of large-scale perishable garbage, and has a wider application range. Description of the Drawings

[0017] Figure 1 is the front view of the drainage system of the utility model;

[0018] Figure 2 is the Figure 1 A-A cross-sectional view in

[0019] Figure 3 is the Figure 1 B-B cross-sectional view in

[0020] Figure 4 is the detailed axonometric view of the drainage system of the utility model;

[0021] Figure 5 is the Figure 4 enlarged view at C in

[0022] Figure 6 is the cross-sectional view of the bottom drainage body of the drainage system of the utility model;

[0023] Figure 7 is the sectional view of the bottom drainage body of the drainage system of the utility model.

[0024] The reference signs in the drawings are: 1 - drainage unit, 101 - capillary drainage belt, 1011 - blocking belt, 1012 - groove, 102 - water-permeable pipe, 103 - collecting pipe, 104 - bottom drainage body, 1041 - grid mesh, 1042 - fine-grained filler, 1043 - medium-coarse-grained filler, 1044 - cobblestone filler, 2 - discharge port, 3 - stirring unit, 4 - support beam, 5 - gas collecting pipeline, 6 - gas dehumidification equipment, 7 - water treatment unit. Detailed Embodiments

[0025] The following further illustrates the utility model in conjunction with the drawings and embodiments, but it shall not be used as the basis for limiting the utility model.

[0026] As Figure 1-7As shown in the figure, a new type of perishable waste biological drying and drainage system is provided. A fermentation chamber is arranged inside the tower treatment device. The bottom surface of the cylinder 7 is circular and the whole is in a long cylinder shape. Inside the fermentation chamber of the tower treatment device, there are successively an inlet, a stirring unit 3 and a drainage unit 1 from top to bottom. The drainage unit 1 is arranged at the bottom of the tower treatment device and collects the wastewater generated during the biological drying of perishable waste through percolation, avoiding excessive local moisture in the fermentation chamber of the tower treatment device and affecting the aeration and fermentation effects. At the same time, support beams 4 are arranged in layers inside the fermentation chamber. The support beams 4 are provided with support parts for supporting the materials. The stirring unit 3 divides the fermentation chamber into upper and lower interconnected stirring and discharging areas through the support beams 4. The stirring units 3 in each layer of the stirring and discharging areas are arranged on the support beams 4. The stirring unit 3 can rotate around the center of the tower treatment device and stir and mix the materials at the same time. In each layer of the stirring and discharging areas, there are discharging ports 2 on the tower treatment device. Outside the discharging ports 2, there is a feeding device connected to the inlet at the top of the tower treatment device. Inside the basement at the bottom of the tower treatment device, there is a water treatment unit 7 to form an overall collection state of the moisture in the top and bottom areas of the fermentation chamber inside the tower treatment device. The wastewater generated by the fermentation of perishable waste in the tower treatment device is treated by the wastewater treatment equipment equipped in the water treatment unit 7 and then discharged up to the standard. The drainage unit 1 includes a capillary drainage belt 101 and a bottom drainage body 104 respectively arranged inside and at the bottom of the fermentation chamber. There is a water guiding channel for the water body to pass between the capillary drainage belt 101 and the bottom drainage body 104. The drainage end of the bottom drainage body 104 is connected to the water treatment unit 7. A gas collection and dehumidification unit connected to the water treatment unit 7 is arranged at the top of the fermentation chamber.

[0027] In this embodiment, the support beams 4 are arranged in a cross shape. The ends of the support beams 4 are connected to the inner wall of the fermentation chamber, and the intersection center of the support beams 4 is located at the center of the tower treatment device, which is used to support the stirring unit 3 and share the pressure brought by the upper materials. At the same time, it can also reduce the extrusion of the lower materials and avoid affecting the aeration effect of the lower materials.

[0028] Among them, the feeding device includes a feeding track. The inlet of the feeding track is connected to the discharging port 2 on the same side of each layer of the stirring and discharging area, and the outlet of the feeding track is connected to the inlet at the top of the tower treatment device. Among them, the discharging port 2 is arranged on the symmetry axis of each layer. The number set in each layer is determined according to the cylinder diameter of the tower treatment device. It is preferably set to 4 and evenly and symmetrically arranged around the tower treatment device. Each layer of the stirring and discharging area divides the tower treatment device equally in the plane. The discharging ports 2 of the upper and lower layers are arranged vertically in alignment. When the stirring unit 3 rotates around the center to near the discharging port 2, the corresponding discharging port 2 is opened and the discharging starts. The materials in each layer are discharged alternately in the same direction through the discharging ports 2 of each layer. After mixing the discharged materials of each layer with fresh perishable waste, they are fed from the top. This step is continuously repeated to realize the mixing of the fermentation materials in the whole tower treatment device.

[0029] In this embodiment, the gas collection and dehumidification unit includes a gas collection pipeline 5 and a gas dehumidification device 6. The gas collection pipeline 5 is arranged on the top of the fermentation bin, and the gas dehumidification device 6 is arranged on the top of the tower treatment device. Because the tower treatment device connects the gas dehumidification device 6 outside it with the gas collection pipeline 5 inside it through a pipe section, the exhaust gas with nearly saturated humidity generated during the fermentation of perishable garbage can be collected through the gas collection unit 5 and transported to the gas dehumidification unit 6. The gas dehumidification unit 6 can dehumidify the exhaust gas with nearly saturated humidity and then send it to the subsequent gas purification unit, and the wastewater in the dehumidification process is collected into the water treatment unit 7 through a pipeline.

[0030] In this embodiment, the capillary drainage belt 101 is made of thin sheet soft plastic, and includes a number of barrier belts 1011. A groove 1012 for water discharge only is formed between adjacent barrier belts. The groove 1012 is in an Ω shape with a larger inside and a smaller outside. Water is transferred by capillary, siphon, gravity and surface tension, and has good anti-clogging performance. The capillary drainage belt 101 is arranged in the bottom stirring and discharging area, and the capillary drainage belt 101 is arranged in the bottom layer of the tower treatment device and arranged along the inner wall of the fermentation bin. At the same time, the capillary drainage belt 101 is disconnected at the discharge port 2, and its top is slightly higher than the discharge port 2, and the bottom is connected to the annular water collecting pipe 103 located below the ground of the bottom layer.

[0031] A water collecting pipe 103 is arranged below the ground of the bottom layer of the tower treatment device. The water collecting pipe 103 is arranged according to the shape of the fermentation bin. The water collecting pipe 103 is arranged below the ground of the bottom layer of the tower treatment device along the peripheral direction, and the water collecting pipe 103 is connected with the groove 1012. Therefore, except for part of the water generated during the fermentation process of the tower treatment device that escapes freely to the gas collecting unit 5 at the top during the aeration process, the remaining part will be collected downward, resulting in a high moisture content of the bottom material. Through the capillary siphon effect of the capillary drainage belt 101, the water is collected into the annular water collecting pipe 103 along the groove 1012 of the capillary drainage belt 101; the annular water collecting pipe 103 collects the collected water from the capillary drainage belt 101 and discharges it into the permeable pipe 102 located further below.

[0032] Based on the above content, a water-permeable pipe 102 is provided in the bottom drainage body 104. The water-permeable pipe 102 is supported by a rust-proof spring coil to form a high-pressure soft structure. A water-permeable part is provided on the body of the water-permeable pipe 102. The top end of the water-permeable pipe 102 is provided with a first pipe mouth end connected to the water collecting pipe 103. The bottom end of the water-permeable pipe 102 is provided with a second pipe mouth end, which faces the drainage end of the bottom drainage body 104, so that the capillary siphon principle can be used for efficient drainage. Among them, multiple water-permeable pipes 102 are evenly arranged on the plane.

[0033] Among them, a filter layer is provided on the inner lining of the permeable pipe 102. The filter layer uses non-woven fabric as the inner lining for filtration, so that sediment impurities cannot enter the pipe.

[0034] At the same time, the permeable pipe 102 includes an inclined pipe section. Through this inclined pipe section, the contact area of the permeable pipe 102 in the bottom drainage body 104 can be correspondingly increased, so as to better utilize the capillary siphon principle for drainage.

[0035] In this embodiment, the bottom drainage body 104 is generally in the shape of an inverted frustum, and a grille 1041 is provided at the top of the bottom drainage body 104. At the same time, the bottom drainage body 104 is arranged in multiple layers, and from top to bottom below the grille 1041 are fine-grained fillers 1042, medium-coarse-grained fillers 1043, and cobblestone fillers 1044. Among them, the top grille 1041 is arranged on the bottom surface of the fermentation bin body, and its mesh is slightly smaller than the average particle size of the fermentation materials. The diameters of the fine-grained fillers 1042 and medium-coarse-grained fillers 1043 are both larger than the mesh of the top grille 1041, playing a role in filtration. Therefore, the permeable pipe 102 is arranged along the bottom side wall of the bottom drainage body 104. The water generated by the fermentation of the materials passes through the fine-grained fillers 1042 and medium-coarse-grained fillers 1043 for reverse filtration, and then enters the flexible permeable pipe 102 due to capillary siphon action, and finally reaches the cobblestone filler 1044 layer at the bottom, and then the wastewater is discharged to the water treatment unit 7.

[0036] Among them, the filler diameter of the fine-grained filler 1042 is smaller than that of the medium-coarse-grained filler 1043, and the filler diameter of the medium-coarse-grained filler 1043 is smaller than that of the cobblestone filler 1044.

[0037] Based on the above content, the feeding track is supplemented. The feeding track includes a hopper, a guide rail, and a lifting device. The guide rail is vertically arranged outside the tower treatment device, and the hopper is installed in the guide rail. Through the connection between the hopper and the lifting device, the hopper is driven to move to the target layer discharge port 2 where discharging is required. By opening the shutter at the discharge port 2, part of the materials in the fermentation bin body can be moved onto the hopper under the pushing action of the stirring unit 3, and then moved to the top under the action of the lifting device. Thus, it can be mixed with fresh perishable garbage and then enter the fermentation bin body again through the feeding port for stirring.

[0038] The stirring unit 3 includes a rotating device arranged on the top of the support beam 4, and a stirring shaft is arranged on the side of the rotating device opposite to the discharge port. The stirring shaft can be rotated by transmission equipment such as a motor configured in the rotating device. At the same time, the rotating device is also equipped with transmission equipment such as a motor, which drives the stirring shaft to rotate around the circumferential direction of the tower treatment device, and a spiral pushing component is arranged on the stirring shaft to stir and push the materials.

[0039] The above embodiments are only a relatively optimal technical solution of the present utility model. Those skilled in the art should understand that without departing from the principle and essence of the present utility model, modifications or replacements can be made to the technical solutions or parameters in the embodiments, and all should be covered within the protection scope of the present utility model.

Claims

1. A novel biological drying and drainage system for perishable garbage, wherein a fermentation chamber is arranged inside a tower treatment device, and is characterized by: The fermentation bin body comprises a feed port, a stirring unit (3) and a drainage unit (1) from top to bottom, the fermentation bin body is provided with support beams (4) in layers, the support beams (4) are provided with a support portion capable of supporting materials, the stirring unit (3) is divided into stirring and discharging areas interconnected with each other in the upper and lower parts by the support beams (4), each layer of the stirring and discharging area is provided with a discharge port (2) on the tower processing device, and a feeding device connected to the feed port at the top of the tower processing device is provided outside the discharge port (2); A water treatment unit (7) is provided at the bottom of the tower treatment device, and the drainage unit (1) comprises a capillary drainage belt (101) and a bottom drainage body (104) respectively arranged inside and at the bottom of the fermentation bin, the drainage end of the bottom drainage body (104) being connected to the water treatment unit (7), and an air collection and dehumidification unit connected to the water treatment unit (7) is provided at the top of the fermentation bin.

2. A novel bio-drying and drainage system for perishable waste according to claim 1, characterized in that: The capillary drainage belt (101) surrounds the inner wall of the fermentation chamber in the bottom stirring and discharging area. The capillary drainage belt (101) includes a plurality of barrier belts (1011), and grooves (1012) for only water discharge are formed between adjacent barrier belts.

3. A novel bio-drying and drainage system for perishable waste according to claim 2, characterized in that: A water collecting pipe (103) is arranged below the ground of the bottom layer of the tower-type treatment device, and the water collecting pipe (103) is connected to the groove (1012).

4. A novel bio-drying and drainage system for perishable waste according to claim 3, characterized in that: A water-permeable pipe (102) is provided in the bottom drainage body (104), a water-permeable portion is provided on the pipe body of the water-permeable pipe (102), a first pipe mouth end connected to the water collecting pipe (103) is provided at the top end of the water-permeable pipe (102), and a second pipe mouth end is provided at the bottom end of the water-permeable pipe (102), and the second pipe mouth end faces the drainage end of the bottom drainage body (104).

5. A novel bio-drying and drainage system for perishable waste according to claim 4, characterized in that: The permeable pipe (102) is lined with a filter layer.

6. A novel bio-drying and drainage system for perishable waste according to claim 4, characterized in that: The water permeable pipe (102) is provided with an inclined pipe section.

7. A novel bio-drying and drainage system for perishable waste according to claim 1, characterized in that: The bottom drainage body (104) is provided with a grille net (1041) on its top, and the mesh of the grille net (1041) is smaller than the particle size of the fermentation material.

8. A novel bio-drying and drainage system for perishable waste according to claim 7, characterized in that: The bottom drainage body (104) is provided with a fine-grained filler (1042), a medium-coarse-grained filler (1043) and a pebble filler (1044) in sequence below the grid net (1041); the filler diameter of the fine-grained filler (1042) is smaller than the filler diameter of the medium-coarse-grained filler (1043); and the filler diameter of the medium-coarse-grained filler (1043) is smaller than the filler diameter of the pebble filler (1044).

9. A novel bio-drying and drainage system for perishable waste according to claim 1, characterized in that: The gas collection and dehumidification unit comprises a gas collection pipeline (5) and a gas dehumidification device (6), wherein the gas collection pipeline (5) is arranged on the top of the fermentation bin, and the gas dehumidification device (6) is arranged on the top of the tower treatment device, and the gas dehumidification device (6) is connected to the gas collection pipeline (5) through a pipe section.

Images